Guitar pick

A guitar pick (American English) is a plectrum used for guitars. Picks are generally made of one uniform material—such as some kind of plastic (nylon, Delrin, celluloid), rubber, felt, tortoiseshell, wood, metal, glass, tagua, or stone. They are often shaped in an acute isosceles triangle with the two equal corners rounded and the third corner less rounded. They are used to strum chords or to sound individual notes on a guitar.

Various guitar picks. Clockwise from top: A standard nylon pick; An imitation tortoise-shell pick; A plastic pick with high friction coating (black areas); A stainless steel pick; A pick approximating a Reuleaux triangle; and a Tortex "shark's fin" pick
A guitar pick with a custom drawing

In British English, guitar picks are referred to as plectrums, reserving the term pick to identify the difference between this and finger picks. [citation needed]